PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/27-04:12:50
G01     72.8           33.0                6.4 +/-    0.61      10.6 +/-    0.61  0.040 / 0.100
G07     136.2          30.1                9.7 +/-    1.06      16.9 +/-    1.06  0.050 / 0.120
G11     53.6           30.7                4.6 +/-    0.99       7.9 +/-    0.99  0.050 / 0.120
G13     276.2          38.2                5.8 +/-    1.08       8.7 +/-    1.08  0.070 / 0.120
G15     305.0          14.3                1.4 +/-    2.29       3.6 +/-    2.29  0.040 / 0.050
G17     230.6          70.5                6.7 +/-    0.71       7.1 +/-    0.71  0.060 / 0.060
G18     47.6           16.6                3.1 +/-    1.31       7.5 +/-    1.31  0.130 / 0.260
G19     222.4          38.5                6.2 +/-    0.75       9.3 +/-    0.75  0.150 / 0.330
G28     11.7           60.4                4.9 +/-    0.73       5.5 +/-    0.73  0.030 / 0.030
G30     133.6          65.0                7.3 +/-    0.94       8.0 +/-    0.94  0.030 / 0.040