PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/18-03:57:40
G01     316.4          23.0                2.5 +/-    1.51       5.0 +/-    1.51  0.120 / 0.290
G10     87.9           50.7                5.3 +/-    0.61       6.6 +/-    0.61  0.130 / 0.390
G11     295.5          27.3                1.7 +/-    0.84       3.1 +/-    0.84  0.080 / 0.200
G14     322.4          71.4                4.6 +/-    1.05       4.8 +/-    1.05  0.100 / 0.160
G18     106.3          25.9                6.5 +/-    1.60      12.4 +/-    1.60  0.040 / 0.040
G22     303.4          15.1                3.8 +/-    1.70       9.5 +/-    1.70  0.030 / 0.040
G25     91.6           11.0                3.7 +/-    2.11      10.1 +/-    2.11  0.040 / 0.050
G31     175.2          48.2                6.6 +/-    1.26       8.5 +/-    1.26  0.060 / 0.060
G32     14.8           64.1                3.1 +/-    0.56       3.4 +/-    0.56  0.130 / 0.420