PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/20-16:42:50
G01     275.5          41.3               11.3 +/-    2.21      16.1 +/-    2.21  0.060 / 0.060
G03     315.6          29.7                8.7 +/-    1.59      15.4 +/-    1.59  0.070 / 0.050
G10     127.8          20.0                9.6 +/-    1.88      21.1 +/-    1.88  0.080 / 0.120
G11     256.6          21.8               10.8 +/-    2.22      22.8 +/-    2.22  0.080 / 0.120
G14     37.5           53.2                9.2 +/-    2.56      11.1 +/-    2.56  0.020 / 0.020
G22     314.6          50.4                9.1 +/-    0.94      11.4 +/-    0.94  0.030 / 0.020
G25     56.0           18.0                7.4 +/-    2.88      17.0 +/-    2.88  0.050 / 0.060
G26     149.4          22.6               11.0 +/-    1.36      22.8 +/-    1.36  0.050 / 0.050
G31     62.9           76.0                9.7 +/-    0.36      10.0 +/-    0.36  0.070 / 0.080
G32     61.8           33.9                9.1 +/-    1.31      14.7 +/-    1.31  0.060 / 0.060