PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/29-18:28:10
G10     247.2          25.7               12.7 +/-    1.09      24.4 +/-    1.09  0.040 / 0.070
G13     56.6           30.7               11.4 +/-    0.94      19.7 +/-    0.94  0.040 / 0.070
G15     93.9           57.8               12.2 +/-    0.67      14.1 +/-    0.67  0.060 / 0.170
G16     299.1          15.9                8.0 +/-    3.68      19.4 +/-    3.68  0.050 / 0.130
G20     266.1          49.5               11.2 +/-    1.12      14.2 +/-    1.12  0.180 / 0.600
G21     328.9          56.7               10.8 +/-    0.93      12.7 +/-    0.93  0.230 / 0.680
G26     271.9          16.9               10.7 +/-    2.59      25.3 +/-    2.59  0.030 / 0.050
G29     162.4          55.5               13.5 +/-    0.95      16.0 +/-    0.95  0.030 / 0.040