PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/05-09:42:50
G07     336.9          59.2                5.7 +/-    0.60       6.5 +/-    0.60  0.030 / 0.060
G08     95.9           51.2                9.9 +/-    0.43      12.3 +/-    0.43  0.040 / 0.070
G09     183.6          71.6                8.2 +/-    0.70       8.6 +/-    0.70  0.090 / 0.100
G11     143.9          13.0                6.7 +/-    2.05      17.4 +/-    2.05  0.100 / 0.090
G16     46.6           9.8                 3.8 +/-    4.36      10.5 +/-    4.36  0.030 / 0.040
G23     155.9          43.7                9.5 +/-    0.76      13.0 +/-    0.76  0.040 / 0.030
G27     54.3           30.8                6.3 +/-    2.37      10.8 +/-    2.37  0.040 / 0.040
G28     237.5          29.9                9.2 +/-    1.29      16.2 +/-    1.29  0.030 / 0.040
G30     300.9          33.5                3.3 +/-    1.03       5.4 +/-    1.03  0.100 / 0.660