PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/06-18:57:50
G01     82.7           32.6               13.2 +/-    1.00      22.0 +/-    1.00  0.050 / 0.060
G07     130.7          34.0               14.6 +/-    1.05      23.6 +/-    1.05  0.040 / 0.060
G11     61.2           36.8               12.6 +/-    0.71      19.4 +/-    0.71  0.050 / 0.100
G13     287.0          38.2               12.5 +/-    0.93      18.8 +/-    0.93  0.050 / 0.100
G15     310.5          12.8               10.9 +/-    1.16      28.7 +/-    1.16  0.050 / 0.080
G17     218.3          59.4               15.2 +/-    0.81      17.4 +/-    0.81  0.040 / 0.090
G18     56.3           21.4               10.7 +/-    1.86      22.8 +/-    1.86  0.120 / 0.130
G19     216.7          32.8               14.9 +/-    3.24      24.6 +/-    3.24  0.100 / 0.110
G28     350.0          61.6               11.6 +/-    0.70      13.0 +/-    0.70  0.090 / 0.280
G30     121.5          69.2               13.7 +/-    0.93      14.6 +/-    0.93  0.090 / 0.270