PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/03-07:28:00
G01     117.9          17.1                4.4 +/-    1.56      10.5 +/-    1.56  0.040 / 0.040
G07     81.1           65.8                5.0 +/-    0.55       5.4 +/-    0.55  0.040 / 0.040
G08     45.8           33.7                2.4 +/-    0.37       3.9 +/-    0.37  0.030 / 0.040
G09     175.8          25.8                5.8 +/-    1.03      11.1 +/-    1.03  0.030 / 0.040
G11     110.0          40.9                6.7 +/-    0.86       9.7 +/-    0.86  0.070 / 0.170
G13     317.5          20.2                2.2 +/-    1.44       4.9 +/-    1.44  0.070 / 0.220
G17     201.2          22.2                3.2 +/-    1.86       6.7 +/-    1.86  0.100 / 0.410
G18     94.3           20.6                5.2 +/-    0.82      11.3 +/-    0.82  0.110 / 0.450
G28     281.1          51.8                5.9 +/-    1.01       7.3 +/-    1.01  0.130 / 0.300
G30     340.5          66.6                3.3 +/-    0.54       3.5 +/-    0.54  0.130 / 0.340