PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/02-15:12:50
G01     235.2          25.0                9.5 +/-    0.94      18.6 +/-    0.94  0.060 / 0.120
G03     304.2          62.9                6.2 +/-    1.01       6.8 +/-    1.01  0.070 / 0.140
G14     74.7           33.6                6.1 +/-    0.59      10.0 +/-    0.59  0.080 / 0.120
G16     153.9          34.4               12.8 +/-    0.91      20.6 +/-    0.91  0.080 / 0.110
G18     210.9          15.4                9.1 +/-    1.36      22.5 +/-    1.36  0.080 / 0.110
G22     240.2          76.9                8.3 +/-    0.91       8.5 +/-    0.91  0.090 / 0.140
G23     300.7          32.6                7.1 +/-    1.63      11.9 +/-    1.63  0.030 / 0.040
G26     114.4          50.0               11.2 +/-    0.40      14.2 +/-    0.40  0.030 / 0.050
G31     42.1           40.7                6.0 +/-    1.41       8.7 +/-    1.41  0.050 / 0.050
G32     91.2           11.7                8.5 +/-    1.08      22.9 +/-    1.08  0.050 / 0.050