PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/29-14:12:40
G01     111.6          22.7                8.1 +/-    0.67      16.7 +/-    0.67  0.080 / 0.070
G07     100.8          58.5                8.5 +/-    0.60       9.8 +/-    0.60  0.060 / 0.100
G08     42.4           22.8                5.4 +/-    0.59      11.1 +/-    0.59  0.030 / 0.030
G09     174.5          16.9                8.4 +/-    1.15      20.0 +/-    1.15  0.030 / 0.040
G11     92.9           40.2                7.8 +/-    0.88      11.3 +/-    0.88  0.080 / 0.190
G13     314.5          23.6                4.3 +/-    2.97       8.7 +/-    2.97  0.080 / 0.150
G17     203.3          35.1               11.1 +/-    1.65      17.5 +/-    1.65  0.040 / 0.040
G28     308.0          59.7                7.9 +/-    0.81       9.0 +/-    0.81  0.040 / 0.040
G30     357.3          73.1                7.6 +/-    0.99       7.9 +/-    0.99  0.080 / 0.270