PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/12-07:43:00
G01     122.3          15.4                5.4 +/-    1.80      13.4 +/-    1.80  0.030 / 0.040
G07     72.7           67.4                6.1 +/-    0.69       6.5 +/-    0.69  0.040 / 0.040
G08     45.8           32.6                3.7 +/-    0.47       6.1 +/-    0.47  0.020 / 0.020
G09     173.7          25.1                6.2 +/-    1.13      12.2 +/-    1.13  0.020 / 0.030
G11     109.7          38.6                6.8 +/-    0.50      10.1 +/-    0.50  0.140 / 0.230
G13     319.1          16.8                2.5 +/-    2.44       6.0 +/-    2.44  0.120 / 0.210
G17     200.0          22.6                6.1 +/-    1.39      12.6 +/-    1.39  0.090 / 0.220
G18     96.2           19.2                5.5 +/-    1.24      12.4 +/-    1.24  0.090 / 0.210
G28     284.2          55.0                6.9 +/-    0.70       8.3 +/-    0.70  0.090 / 0.280
G30     337.6          64.2                4.4 +/-    0.68       4.8 +/-    0.68  0.100 / 0.290