PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/30-07:58:00
G01     109.7          24.0                3.6 +/-    0.99       7.2 +/-    0.99  0.040 / 0.050
G07     103.1          59.0                5.8 +/-    0.40       6.6 +/-    0.40  0.050 / 0.070
G08     42.1           21.5                2.8 +/-    1.21       5.9 +/-    1.21  0.050 / 0.150
G09     175.0          15.8                6.0 +/-    2.25      14.7 +/-    2.25  0.060 / 0.110
G11     92.2           41.5                5.2 +/-    0.73       7.4 +/-    0.73  0.030 / 0.030
G13     312.8          25.3                4.7 +/-    2.13       9.2 +/-    2.13  0.030 / 0.050
G17     204.3          36.9                5.6 +/-    2.18       8.6 +/-    2.18  0.060 / 0.080
G19     208.2          11.8                4.0 +/-    8.42      10.8 +/-    8.42  0.040 / 0.090
G28     313.6          60.6                4.2 +/-    0.84       4.7 +/-    0.84  0.080 / 0.200
G30     12.2           76.1                4.5 +/-    0.44       4.6 +/-    0.44  0.070 / 0.180