PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/07-20:58:00
G01     50.4           25.8               10.2 +/-    0.65      19.6 +/-    0.65  0.090 / 0.390
G06     177.4          25.2               16.3 +/-    2.49      31.6 +/-    2.49  0.070 / 0.300
G07     146.3          13.3               16.3 +/-    4.29      42.2 +/-    4.29  0.100 / 0.340
G11     45.1           16.4                8.2 +/-    2.44      19.7 +/-    2.44  0.080 / 0.270
G13     251.2          30.6               14.2 +/-    1.67      24.5 +/-    1.67  0.070 / 0.120
G15     284.3          15.7               11.2 +/-    2.81      27.5 +/-    2.81  0.070 / 0.110
G17     294.0          77.4               12.9 +/-    0.58      13.2 +/-    0.58  0.040 / 0.070
G19     245.5          58.4               14.7 +/-    0.79      16.9 +/-    0.79  0.040 / 0.060
G28     52.3           52.9               10.4 +/-    0.34      12.7 +/-    0.34  0.120 / 0.450
G30     149.3          40.7               13.5 +/-    1.01      19.5 +/-    1.01  0.130 / 0.470