PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/10-09:57:50
G10     293.7          51.0                4.8 +/-    0.83       6.0 +/-    0.83  0.040 / 0.040
G15     46.5           30.0                2.6 +/-    0.71       4.5 +/-    0.71  0.050 / 0.040
G20     345.6          65.4                3.7 +/-    0.38       4.0 +/-    0.38  0.060 / 0.100
G21     93.8           72.5                5.2 +/-    1.02       5.4 +/-    1.02  0.060 / 0.100
G24     98.8           25.1                4.1 +/-    1.78       7.9 +/-    1.78  0.040 / 0.040
G27     305.6          31.4                4.8 +/-    0.73       8.2 +/-    0.73  0.030 / 0.040
G32     210.0          25.1                5.3 +/-    1.18      10.3 +/-    1.18  0.040 / 0.100