PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/27-01:28:10
G01     120.1          17.2                6.1 +/-    0.95      14.3 +/-    0.95  0.040 / 0.080
G07     77.4           67.1                4.6 +/-    0.74       4.9 +/-    0.74  0.040 / 0.070
G08     45.9           33.7                2.8 +/-    0.45       4.5 +/-    0.45  0.080 / 0.210
G09     177.9          28.1                6.7 +/-    2.90      12.3 +/-    2.90  0.080 / 0.200
G11     110.8          39.1                7.0 +/-    0.74      10.4 +/-    0.74  0.040 / 0.120
G13     318.6          17.6                2.5 +/-    1.53       5.7 +/-    1.53  0.060 / 0.120
G17     201.7          23.0                6.7 +/-    1.23      13.8 +/-    1.23  0.030 / 0.040
G28     291.9          57.3                5.7 +/-    1.02       6.7 +/-    1.02  0.030 / 0.040
G30     353.6          70.1                2.7 +/-    0.86       2.9 +/-    0.86  0.040 / 0.070