PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/28-13:58:10
G01     93.5           31.0                9.2 +/-    1.02      15.8 +/-    1.02  0.020 / 0.030
G07     122.8          48.0                6.1 +/-    0.88       7.9 +/-    0.88  0.020 / 0.030
G11     71.2           40.4                7.6 +/-    0.42      11.0 +/-    0.42  0.080 / 0.140
G13     297.6          35.2                7.6 +/-    2.25      12.0 +/-    2.25  0.090 / 0.120
G17     212.3          51.2               11.1 +/-    1.20      13.8 +/-    1.20  0.040 / 0.060
G18     66.3           24.1                7.5 +/-    1.52      14.9 +/-    1.52  0.040 / 0.060
G19     213.7          21.6                7.4 +/-    1.76      15.7 +/-    1.76  0.040 / 0.080
G28     343.1          61.9                6.4 +/-    0.57       7.1 +/-    0.57  0.050 / 0.110
G30     89.0           78.9                6.0 +/-    1.02       6.1 +/-    1.02  0.030 / 0.070