PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/29-03:57:50
G01     76.7           33.2                5.3 +/-    0.86       8.6 +/-    0.86  0.080 / 0.090
G07     134.2          33.0                9.6 +/-    0.86      15.8 +/-    0.86  0.060 / 0.090
G11     56.0           32.8                2.7 +/-    0.91       4.5 +/-    0.91  0.070 / 0.160
G13     280.3          38.3                5.2 +/-    1.11       7.8 +/-    1.11  0.070 / 0.160
G15     307.7          13.4                1.2 +/-    1.19       3.0 +/-    1.19  0.100 / 0.100
G17     225.3          67.5                8.8 +/-    0.44       9.5 +/-    0.44  0.090 / 0.110
G18     50.1           18.1                2.8 +/-    0.72       6.4 +/-    0.72  0.040 / 0.060
G19     220.3          35.6                8.3 +/-    1.16      13.0 +/-    1.16  0.040 / 0.050
G28     5.6            60.9                4.8 +/-    0.70       5.4 +/-    0.70  0.030 / 0.040
G30     129.2          68.0                6.1 +/-    0.46       6.5 +/-    0.46  0.030 / 0.040