PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/23-20:28:00
G01     124.6          13.1               14.7 +/-    1.63      38.4 +/-    1.63  0.030 / 0.030
G07     72.4           65.7               12.4 +/-    0.22      13.4 +/-    0.22  0.030 / 0.030
G08     48.0           36.1               10.3 +/-    1.14      16.1 +/-    1.14  0.090 / 0.090
G09     178.3          34.3               15.7 +/-    0.71      25.2 +/-    0.71  0.090 / 0.100
G11     113.5          37.4               14.2 +/-    0.80      21.6 +/-    0.80  0.290 / 0.340
G13     320.1          14.4                9.7 +/-    2.68      24.4 +/-    2.68  0.180 / 0.290
G17     199.4          18.6               16.9 +/-    1.44      38.6 +/-    1.44  0.120 / 0.100
G18     98.3           17.8               13.2 +/-    1.53      30.7 +/-    1.53  0.130 / 0.070
G28     275.6          51.3               13.4 +/-    3.20      16.6 +/-    3.20  0.030 / 0.030
G30     336.9          63.4               11.5 +/-    0.74      12.7 +/-    0.74  0.030 / 0.030