PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/07-14:12:50
G01     252.9          36.0                9.6 +/-    2.43      14.9 +/-    2.43  0.040 / 0.070
G03     316.1          45.9                8.1 +/-    0.58      10.8 +/-    0.58  0.050 / 0.060
G11     240.4          13.3                7.3 +/-    1.20      19.0 +/-    1.20  0.090 / 0.390
G14     56.2           44.2                7.4 +/-    0.82      10.0 +/-    0.82  0.070 / 0.410
G18     222.9          29.0                8.1 +/-    2.08      14.6 +/-    2.08  0.040 / 0.040
G22     303.7          69.3                8.5 +/-    0.89       9.0 +/-    0.89  0.030 / 0.040
G25     41.4           11.5                6.9 +/-    3.08      18.7 +/-    3.08  0.300 / 0.280
G26     135.6          37.5                9.6 +/-    1.12      14.5 +/-    1.12  0.280 / 0.270
G31     41.5           57.9                7.4 +/-    0.72       8.5 +/-    0.72  0.080 / 0.080
G32     76.9           22.5                6.4 +/-    0.82      13.3 +/-    0.82  0.070 / 0.090