PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/28-03:43:10
G10     304.6          54.0                8.2 +/-    1.28       9.8 +/-    1.28  0.040 / 0.040
G14     212.1          13.3               12.3 +/-    1.98      31.8 +/-    1.98  0.030 / 0.040
G15     45.8           25.3                5.7 +/-    1.15      11.0 +/-    1.15  0.070 / 0.090
G20     354.2          65.2                9.1 +/-    0.59       9.9 +/-    0.59  0.070 / 0.080
G21     108.9          71.7                8.6 +/-    0.86       9.0 +/-    0.86  0.130 / 0.520
G24     91.3           28.0                6.1 +/-    0.54      11.2 +/-    0.54  0.130 / 0.570
G27     294.9          36.0                9.3 +/-    0.60      14.5 +/-    0.60  0.050 / 0.050
G32     212.5          38.6               11.6 +/-    1.34      17.3 +/-    1.34  0.040 / 0.050