PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/08-21:57:50
G01     50.0           25.3               11.9 +/-    2.22      23.1 +/-    2.22  0.040 / 0.040
G06     179.7          21.8               19.8 +/-    1.44      41.7 +/-    1.44  0.040 / 0.050
G11     44.2           14.4               10.6 +/-    2.96      26.7 +/-    2.96  0.040 / 0.040
G13     249.9          31.1               14.9 +/-    2.43      25.6 +/-    2.43  0.040 / 0.040
G15     283.2          15.9               10.6 +/-    1.00      25.9 +/-    1.00  0.110 / 0.160
G17     318.5          79.0               13.7 +/-    0.37      14.0 +/-    0.37  0.090 / 0.140
G19     245.4          59.8               15.4 +/-    0.71      17.5 +/-    0.71  0.060 / 0.070
G28     46.1           55.6               12.6 +/-    1.16      14.9 +/-    1.16  0.050 / 0.070
G30     149.3          40.6               15.9 +/-    1.18      22.9 +/-    1.18  0.180 / 0.130