PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/31-06:27:50
G01     121.3          16.1                4.3 +/-    1.78      10.3 +/-    1.78  0.170 / 0.350
G07     76.7           66.6                4.4 +/-    0.36       4.7 +/-    0.36  0.170 / 0.330
G08     45.2           31.3                1.3 +/-    0.69       2.2 +/-    0.69  0.030 / 0.040
G09     174.3          24.8                5.0 +/-    0.94       9.8 +/-    0.94  0.030 / 0.040
G11     107.9          39.1                6.5 +/-    0.52       9.6 +/-    0.52  0.090 / 0.220
G13     318.6          17.8                3.6 +/-    3.26       8.3 +/-    3.26  0.100 / 0.230
G17     200.1          24.1                4.4 +/-    3.43       8.7 +/-    3.43  0.150 / 0.210
G18     94.5           19.7                4.0 +/-    1.86       8.8 +/-    1.86  0.140 / 0.210
G28     285.9          55.4                4.3 +/-    2.46       5.2 +/-    2.46  0.030 / 0.030
G30     339.2          65.3                3.8 +/-    0.64       4.1 +/-    0.64  0.030 / 0.030