PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/13-22:43:10
G01     80.3           32.9                9.5 +/-    1.84      15.7 +/-    1.84  0.060 / 0.080
G07     132.2          33.6               11.9 +/-    1.17      19.3 +/-    1.17  0.040 / 0.070
G11     58.8           35.0                9.2 +/-    1.43      14.7 +/-    1.43  0.080 / 0.090
G13     284.3          38.3               11.2 +/-    3.23      16.8 +/-    3.23  0.060 / 0.100
G15     309.0          13.4                8.7 +/-    3.83      22.4 +/-    3.83  0.040 / 0.040
G17     220.8          63.4               13.1 +/-    1.22      14.4 +/-    1.22  0.040 / 0.040
G18     53.3           19.9                8.4 +/-    2.63      18.6 +/-    2.63  0.110 / 0.100
G19     218.2          34.1               13.1 +/-    1.23      21.1 +/-    1.23  0.090 / 0.110
G28     356.7          61.5                9.6 +/-    0.76      10.7 +/-    0.76  0.080 / 0.190
G30     124.6          69.2               11.5 +/-    1.22      12.2 +/-    1.22  0.120 / 0.230