PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/26-00:13:10
G05     46.9           21.2                7.6 +/-    0.78      16.3 +/-    0.78  0.040 / 0.110
G13     82.5           35.4               10.6 +/-    0.42      16.7 +/-    0.42  0.040 / 0.100
G15     131.3          48.5               12.8 +/-    1.26      16.4 +/-    1.26  0.090 / 0.240
G20     243.1          32.2               13.4 +/-    0.99      22.4 +/-    0.99  0.090 / 0.190
G21     307.9          42.8                0.7 +/-    0.94       1.0 +/-    0.94  0.050 / 0.120
G25     202.8          16.3               12.5 +/-    2.23      30.2 +/-    2.23  0.050 / 0.120
G26     294.5          19.9               11.2 +/-    2.20      24.6 +/-    2.20  0.030 / 0.050
G29     143.5          77.6               12.1 +/-    0.34      12.4 +/-    0.34  0.040 / 0.070