PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/28-21:58:10
G01     70.9           32.7                9.3 +/-    1.75      15.4 +/-    1.75  0.090 / 0.110
G07     136.8          26.3               10.2 +/-    1.29      19.4 +/-    1.29  0.070 / 0.130
G11     52.8           30.2                8.7 +/-    1.44      15.2 +/-    1.44  0.040 / 0.050
G13     274.3          38.3               10.2 +/-    0.95      15.3 +/-    0.95  0.050 / 0.050
G15     302.3          15.5                7.1 +/-    1.74      17.4 +/-    1.74  0.140 / 0.070
G17     232.0          70.2                9.6 +/-    0.54      10.1 +/-    0.54  0.090 / 0.080
G18     47.2           16.7                8.2 +/-    2.48      19.6 +/-    2.48  0.100 / 0.070
G19     223.2          41.5               10.5 +/-    2.26      14.9 +/-    2.26  0.060 / 0.070
G28     10.8           60.6                9.5 +/-    1.73      10.7 +/-    1.73  0.030 / 0.030
G30     135.2          61.4               10.6 +/-    0.36      11.8 +/-    0.36  0.030 / 0.040