PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/22-16:12:50
G01     64.1           31.4                9.8 +/-    0.92      16.7 +/-    0.92  0.070 / 0.140
G06     180.9          12.0               12.9 +/-    4.22      34.4 +/-    4.22  0.090 / 0.130
G07     140.1          22.4               11.1 +/-    0.85      23.1 +/-    0.85  0.030 / 0.050
G11     49.2           23.7                6.9 +/-    0.96      13.8 +/-    0.96  0.040 / 0.040
G13     269.6          36.0               10.1 +/-    1.14      15.8 +/-    1.14  0.080 / 0.200
G15     301.1          14.7                6.6 +/-    2.88      16.6 +/-    2.88  0.080 / 0.210
G17     250.6          76.3               10.7 +/-    0.42      11.0 +/-    0.42  0.050 / 0.170
G19     229.2          49.4               11.8 +/-    1.79      15.0 +/-    1.79  0.090 / 0.140
G28     29.3           57.7                9.1 +/-    0.40      10.6 +/-    0.40  0.020 / 0.030
G30     140.1          58.9               12.4 +/-    0.66      14.2 +/-    0.66  0.030 / 0.030