PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/06-06:27:50
G01     77.9           33.2                3.2 +/-    1.20       5.2 +/-    1.20  0.050 / 0.050
G07     133.6          35.8                7.0 +/-    0.95      11.0 +/-    0.95  0.050 / 0.040
G11     58.9           34.5                4.1 +/-    1.46       6.6 +/-    1.46  0.050 / 0.040
G13     283.8          37.1                6.3 +/-    0.86       9.7 +/-    0.86  0.050 / 0.030
G15     307.4          14.2                2.7 +/-    2.82       6.8 +/-    2.82  0.100 / 0.240
G17     224.7          64.8                7.4 +/-    0.83       8.1 +/-    0.83  0.060 / 0.210
G19     220.1          37.8                6.1 +/-    2.08       9.2 +/-    2.08  0.070 / 0.060
G28     10.1           60.3                4.0 +/-    1.55       4.6 +/-    1.55  0.070 / 0.090
G30     127.4          66.2                7.6 +/-    0.44       8.2 +/-    0.44  0.060 / 0.070