PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/16-23:58:10
G10     256.3          32.6               10.1 +/-    2.16      16.8 +/-    2.16  0.050 / 0.040
G13     47.9           25.0                8.9 +/-    1.88      17.4 +/-    1.88  0.050 / 0.050
G15     73.5           55.1                9.3 +/-    0.86      11.1 +/-    0.86  0.110 / 0.150
G16     290.2          14.9                6.1 +/-    2.39      15.1 +/-    2.39  0.100 / 0.090
G20     278.9          54.3               10.1 +/-    2.98      12.1 +/-    2.98  0.220 / 0.190
G21     342.0          64.0                9.7 +/-    0.67      10.7 +/-    0.67  0.090 / 0.170
G26     262.8          12.9                9.5 +/-    2.23      24.9 +/-    2.23  0.040 / 0.040
G29     164.8          42.2               11.2 +/-    0.68      15.7 +/-    0.68  0.040 / 0.030