PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/29-03:57:40
G01     76.7           33.2                5.5 +/-    1.64       9.1 +/-    1.64  0.060 / 0.080
G07     134.2          33.0                9.5 +/-    1.09      15.6 +/-    1.09  0.050 / 0.080
G11     56.0           32.8                3.4 +/-    1.75       5.6 +/-    1.75  0.030 / 0.040
G13     280.3          38.3                7.7 +/-    0.60      11.5 +/-    0.60  0.050 / 0.050
G15     307.7          13.4                1.0 +/-    2.62       2.7 +/-    2.62  0.070 / 0.110
G17     225.3          67.5                7.5 +/-    0.75       8.0 +/-    0.75  0.080 / 0.080
G18     50.1           18.1                3.3 +/-    2.63       7.6 +/-    2.63  0.220 / 0.270
G19     220.3          35.6                7.4 +/-    1.36      11.7 +/-    1.36  0.110 / 0.200
G28     5.6            60.9                4.8 +/-    0.68       5.4 +/-    0.68  0.070 / 0.080
G30     129.2          68.0                6.8 +/-    0.72       7.3 +/-    0.72  0.060 / 0.090