PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/16-07:43:00
G01     116.0          20.0                6.2 +/-    1.36      13.7 +/-    1.36  0.030 / 0.030
G07     90.6           63.7                6.2 +/-    0.98       6.9 +/-    0.98  0.040 / 0.030
G08     43.1           26.3                4.0 +/-    0.41       7.6 +/-    0.41  0.030 / 0.040
G09     173.1          18.1                5.9 +/-    2.66      13.7 +/-    2.66  0.020 / 0.040
G11     100.1          41.2                7.5 +/-    0.72      10.7 +/-    0.72  0.090 / 0.180
G13     315.7          22.5                1.0 +/-    3.51       2.0 +/-    3.51  0.080 / 0.150
G17     201.7          30.2                5.9 +/-    1.59      10.3 +/-    1.59  0.130 / 0.230
G18     88.5           21.8                5.6 +/-    1.58      11.8 +/-    1.58  0.130 / 0.300
G28     297.0          57.9                4.8 +/-    0.94       5.6 +/-    0.94  0.070 / 0.190
G30     348.9          70.4                5.5 +/-    0.84       5.8 +/-    0.84  0.060 / 0.250