PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/22-19:27:40
G10     293.7          50.7               10.4 +/-    1.13      12.9 +/-    1.13  0.050 / 0.080
G15     47.3           33.9                9.0 +/-    0.94      14.6 +/-    0.94  0.060 / 0.100
G20     345.7          65.4                8.5 +/-    0.70       9.2 +/-    0.70  0.040 / 0.050
G21     88.9           74.7               11.2 +/-    0.84      11.6 +/-    0.84  0.040 / 0.050
G24     96.9           25.1               11.5 +/-    1.12      22.5 +/-    1.12  0.080 / 0.130
G27     304.7          31.9               10.9 +/-    1.12      18.4 +/-    1.12  0.070 / 0.160
G29     168.1          10.0               14.0 +/-    2.26      39.1 +/-    2.26  0.050 / 0.080
G32     209.3          29.7               13.6 +/-    1.92      23.9 +/-    1.92  0.040 / 0.090