PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/12-22:12:30
G10     294.3          50.9               11.3 +/-    2.43      14.2 +/-    2.43  0.050 / 0.090
G15     47.6           35.7                8.2 +/-    0.93      12.8 +/-    0.93  0.090 / 0.090
G20     346.9          65.4               10.2 +/-    0.38      11.1 +/-    0.38  0.070 / 0.140
G21     88.1           75.4               11.3 +/-    0.78      11.7 +/-    0.78  0.080 / 0.140
G24     97.3           25.4               11.2 +/-    0.91      21.6 +/-    0.91  0.210 / 0.430
G27     303.6          32.5               10.0 +/-    1.46      16.7 +/-    1.46  0.190 / 0.380
G29     168.4          10.1               13.3 +/-    1.98      36.9 +/-    1.98  0.040 / 0.040
G32     209.4          30.9               13.1 +/-    1.69      22.6 +/-    1.69  0.030 / 0.040