PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/11-08:42:40
G10     256.2          32.0                6.0 +/-    1.36      10.1 +/-    1.36  0.090 / 0.270
G13     48.2           25.5                3.3 +/-    0.65       6.5 +/-    0.65  0.080 / 0.240
G15     73.2           54.8                3.6 +/-    0.30       4.3 +/-    0.30  0.080 / 0.100
G16     295.1          13.4                3.5 +/-    1.79       9.0 +/-    1.79  0.060 / 0.100
G20     279.3          54.9                5.5 +/-    1.00       6.6 +/-    1.00  0.050 / 0.070
G21     350.1          66.7                1.5 +/-    0.46       1.7 +/-    0.46  0.040 / 0.070
G26     266.9          12.7                4.5 +/-    1.47      11.8 +/-    1.47  0.040 / 0.040
G29     162.9          37.9                4.6 +/-    1.89       6.9 +/-    1.89  0.040 / 0.040