PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/01-00:27:50
G10     242.5          20.9               13.8 +/-    1.67      29.8 +/-    1.67  0.040 / 0.070
G13     63.3           33.4               11.0 +/-    0.39      17.9 +/-    0.39  0.040 / 0.070
G15     105.6          56.8               14.6 +/-    0.47      17.1 +/-    0.47  0.060 / 0.110
G16     306.7          14.4                8.1 +/-    1.29      20.5 +/-    1.29  0.060 / 0.150
G20     257.8          43.8               12.8 +/-    0.94      17.6 +/-    0.94  0.090 / 0.140
G21     322.7          52.9               13.1 +/-    0.85      15.9 +/-    0.85  0.110 / 0.190
G26     278.7          18.5                9.8 +/-    1.65      22.4 +/-    1.65  0.100 / 0.370
G29     158.7          60.2               14.7 +/-    1.16      16.7 +/-    1.16  0.180 / 0.490