PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/16-23:57:30
G02     203.1          37.2               11.4 +/-    0.81      17.4 +/-    0.81  0.100 / 0.190
G06     157.6          70.5               10.3 +/-    0.40      10.9 +/-    0.40  0.330 / 0.140
G12     308.2          16.0                6.5 +/-    2.56      15.8 +/-    2.56  0.040 / 0.010
G17     32.5           52.1                9.3 +/-    1.28      11.4 +/-    1.28  0.040 / 0.010
G19     2.1            64.8                8.4 +/-    0.42       9.2 +/-    0.42  0.090 / 0.040
G24     296.8          38.6                9.1 +/-    1.57      13.5 +/-    1.57  0.120 / 0.040
G28     104.0          30.0               11.2 +/-    0.77      19.6 +/-    0.77  0.090 / 0.100