PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/13-00:27:50
G02     227.0          70.4               10.2 +/-    0.41      10.7 +/-    0.41  0.070 / 0.080
G05     173.7          10.7               -2.5 +/-   27.41      -6.9 +/-   27.41  0.060 / 0.130
G06     44.4           69.4                8.9 +/-    0.37       9.4 +/-    0.37  0.040 / 0.060
G12     319.9          42.0                8.3 +/-    0.41      11.7 +/-    0.41  0.030 / 0.060
G17     65.2           25.7                9.7 +/-    3.29      18.7 +/-    3.29  0.040 / 0.060
G19     49.4           43.0                9.8 +/-    1.28      13.7 +/-    1.28  0.050 / 0.060
G24     251.6          38.3               10.5 +/-    2.00      15.7 +/-    2.00  0.170 / 0.280
G28     127.4          10.3               12.1 +/-    2.08      33.5 +/-    2.08  0.170 / 0.350