PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/18-07:27:50
G01     118.7          18.1                3.4 +/-    1.36       7.9 +/-    1.36  0.030 / 0.040
G07     83.8           65.4                4.8 +/-    0.82       5.2 +/-    0.82  0.040 / 0.040
G08     44.0           28.9                1.2 +/-    0.83       2.2 +/-    0.83  0.030 / 0.040
G09     173.6          21.2                4.3 +/-    1.54       9.3 +/-    1.54  0.030 / 0.040
G11     104.1          40.3                5.9 +/-    0.86       8.5 +/-    0.86  0.160 / 0.320
G13     317.3          20.2                3.3 +/-    4.06       7.2 +/-    4.06  0.170 / 0.410
G17     200.9          27.1                3.1 +/-    1.38       5.7 +/-    1.38  0.090 / 0.210
G18     91.7           20.8                4.9 +/-    0.82      10.5 +/-    0.82  0.110 / 0.180
G28     291.4          56.8                4.2 +/-    0.80       4.9 +/-    0.80  0.130 / 0.410
G30     343.7          67.8                1.7 +/-    0.76       1.8 +/-    0.76  0.100 / 0.380