PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/09-17:12:50
G01     125.3          12.3               10.6 +/-    4.31      28.2 +/-    4.31  0.030 / 0.040
G07     71.9           65.3               11.4 +/-    0.60      12.4 +/-    0.60  0.030 / 0.040
G08     49.4           38.3                9.5 +/-    1.06      14.2 +/-    1.06  0.040 / 0.040
G09     178.8          36.0               11.2 +/-    0.72      17.4 +/-    0.72  0.030 / 0.040
G11     115.4          36.9               12.0 +/-    0.76      18.5 +/-    0.76  0.100 / 0.110
G13     320.4          13.7                9.0 +/-    2.27      23.2 +/-    2.27  0.130 / 0.120
G17     199.6          16.2               11.5 +/-    2.00      27.8 +/-    2.00  0.150 / 0.520
G18     100.4          17.3               11.3 +/-    1.44      26.6 +/-    1.44  0.090 / 0.360
G28     273.0          50.0               10.4 +/-    2.77      13.1 +/-    2.77  0.100 / 0.270
G30     338.1          63.8               10.8 +/-    0.30      11.9 +/-    0.30  0.090 / 0.230