PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/28-07:57:30
G01     113.2          21.9                7.4 +/-    0.84      15.5 +/-    0.84  0.040 / 0.060
G07     96.5           61.5                4.0 +/-    0.25       4.5 +/-    0.25  0.040 / 0.070
G08     42.7           24.6                1.5 +/-    1.66       3.0 +/-    1.66  0.030 / 0.040
G09     175.6          19.2                6.5 +/-    1.24      14.6 +/-    1.24  0.020 / 0.040
G11     97.2           40.9                5.7 +/-    0.56       8.1 +/-    0.56  0.060 / 0.080
G13     315.2          22.7                0.5 +/-    1.35       1.0 +/-    1.35  0.050 / 0.080
G17     203.0          33.2                6.6 +/-    2.56      10.9 +/-    2.56  0.080 / 0.260
G28     306.3          59.7                3.6 +/-    0.94       4.1 +/-    0.94  0.090 / 0.300
G30     0.6            73.5                3.8 +/-    0.60       3.9 +/-    0.60  0.100 / 0.190