PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/04-15:12:50
G01     105.6          26.3                9.8 +/-    1.42      18.5 +/-    1.42  0.030 / 0.040
G07     109.0          57.3               10.3 +/-    0.54      12.0 +/-    0.54  0.020 / 0.030
G08     41.8           19.2                7.4 +/-    1.60      16.7 +/-    1.60  0.080 / 0.120
G09     173.8          11.4                8.9 +/-    2.64      24.2 +/-    2.64  0.080 / 0.130
G11     86.7           42.7               10.4 +/-    0.86      14.5 +/-    0.86  0.050 / 0.060
G13     308.4          29.6               10.2 +/-    1.53      18.1 +/-    1.53  0.050 / 0.060
G17     206.6          38.6               11.3 +/-    1.42      16.8 +/-    1.42  0.030 / 0.050
G18     78.7           24.4                8.4 +/-    1.34      16.7 +/-    1.34  0.030 / 0.050
G28     320.6          61.2                9.8 +/-    0.76      11.0 +/-    0.76  0.040 / 0.070
G30     27.6           78.7               10.8 +/-    0.72      11.0 +/-    0.72  0.050 / 0.090