PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/31-16:12:30
G02     247.5          75.2                9.2 +/-    0.57       9.5 +/-    0.57  0.160 / 0.190
G05     171.2          18.5               11.2 +/-    1.74      25.6 +/-    1.74  0.080 / 0.140
G06     40.6           52.5                9.0 +/-    0.42      11.1 +/-    0.42  0.070 / 0.110
G12     322.9          61.1                8.1 +/-    0.84       9.1 +/-    0.84  0.100 / 0.090
G17     74.6           18.5                7.3 +/-    2.27      16.7 +/-    2.27  0.390 / 0.310
G19     57.5           39.7                8.3 +/-    1.27      12.1 +/-    1.27  0.210 / 0.350
G24     239.5          32.5               10.4 +/-    1.49      17.3 +/-    1.49  0.030 / 0.040
G25     317.2          16.2                6.6 +/-    3.02      15.9 +/-    3.02  0.040 / 0.030