PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/28-08:58:00
G02     199.8          22.2                5.9 +/-    1.30      12.3 +/-    1.30  0.060 / 0.070
G06     175.8          50.7                7.1 +/-    1.02       8.9 +/-    1.02  0.070 / 0.080
G13     228.3          13.0                3.5 +/-    4.69       9.0 +/-    4.69  0.080 / 0.130
G17     24.2           58.5                5.1 +/-    0.80       5.9 +/-    0.80  0.070 / 0.100
G19     329.2          71.1                4.0 +/-    0.49       4.2 +/-    0.49  0.030 / 0.030
G24     310.8          28.6                2.7 +/-    0.97       4.9 +/-    0.97  0.040 / 0.030
G28     89.0           38.9                7.1 +/-    1.26      10.5 +/-    1.26  0.040 / 0.040
G30     156.8          13.6                5.1 +/-    1.33      13.1 +/-    1.33  0.030 / 0.040