PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/07-15:27:50
G02     62.1           30.1                9.6 +/-    1.69      16.8 +/-    1.69  0.050 / 0.040
G05     56.6           61.0               11.9 +/-    0.78      13.4 +/-    0.78  0.040 / 0.040
G12     185.6          31.1               17.8 +/-    0.64      30.6 +/-    0.64  0.080 / 0.290
G13     127.8          16.7               22.4 +/-    2.72      53.5 +/-    2.72  0.110 / 0.340
G15     161.7          14.2               23.5 +/-    2.60      59.5 +/-    2.60  0.040 / 0.060
G20     209.8          61.4               18.7 +/-    0.47      21.0 +/-    0.47  0.040 / 0.050
G21     274.3          21.7               10.5 +/-    2.26      22.2 +/-    2.26  0.070 / 0.110
G25     231.6          49.8               15.0 +/-    1.40      19.0 +/-    1.40  0.080 / 0.140
G29     336.1          62.6               10.4 +/-    0.46      11.6 +/-    0.46  0.080 / 0.250