PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/22-21:58:10
G10     275.3          42.1               15.7 +/-    2.03      22.2 +/-    2.03  0.040 / 0.040
G13     39.6           13.8               11.2 +/-    1.75      28.5 +/-    1.75  0.040 / 0.040
G15     52.6           42.8               14.1 +/-    0.86      19.6 +/-    0.86  0.130 / 0.290
G18     318.8          66.4               13.6 +/-    0.66      14.7 +/-    0.66  0.130 / 0.320
G20     60.0           28.9               12.5 +/-    1.42      22.5 +/-    1.42  0.120 / 0.290
G21     33.2           76.0               15.0 +/-    0.74      15.4 +/-    0.74  0.120 / 0.240
G24     115.0          18.4               18.6 +/-    1.31      42.6 +/-    1.31  0.080 / 0.170
G27     313.4          25.9               13.4 +/-    1.12      25.7 +/-    1.12  0.060 / 0.140
G29     166.8          19.4               20.0 +/-    1.93      44.8 +/-    1.93  0.080 / 0.330
G32     206.6          13.7               25.4 +/-    1.60      65.2 +/-    1.60  0.070 / 0.250