PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/12-07:12:40
G07     336.4          59.0                2.6 +/-    1.21       2.9 +/-    1.21  0.040 / 0.050
G08     95.5           51.4                5.5 +/-    0.50       6.8 +/-    0.50  0.030 / 0.050
G09     187.1          72.3                6.3 +/-    0.52       6.6 +/-    0.52  0.060 / 0.190
G11     144.3          13.2                3.4 +/-    3.18       8.9 +/-    3.18  0.070 / 0.180
G16     46.5           10.9                3.4 +/-    1.80       9.2 +/-    1.80  0.120 / 0.510
G23     156.2          43.0                7.4 +/-    0.63      10.3 +/-    0.63  0.130 / 0.480
G27     53.8           30.5                3.4 +/-    0.81       5.9 +/-    0.81  0.040 / 0.060
G28     238.0          30.5                5.6 +/-    1.98       9.7 +/-    1.98  0.030 / 0.050
G30     301.9          34.7                3.5 +/-    1.23       5.6 +/-    1.23  0.040 / 0.040