PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/23-05:12:50
G10     269.8          39.7                7.7 +/-    0.93      11.3 +/-    0.93  0.130 / 0.580
G13     40.8           16.5                3.7 +/-    3.17       8.8 +/-    3.17  0.110 / 0.500
G15     56.6           46.9                5.7 +/-    0.50       7.5 +/-    0.50  0.080 / 0.230
G16     275.8          11.2                7.3 +/-    2.32      19.8 +/-    2.32  0.090 / 0.160
G20     344.7          68.0                4.6 +/-    0.95       4.9 +/-    0.95  0.040 / 0.040
G21     8.1            73.3                6.1 +/-    0.68       6.3 +/-    0.68  0.040 / 0.040
G24     117.8          15.7                5.1 +/-    1.05      12.5 +/-    1.05  0.060 / 0.070
G27     317.2          21.2                3.6 +/-    4.72       7.6 +/-    4.72  0.070 / 0.060
G29     168.5          29.0                5.9 +/-    0.95      10.5 +/-    0.95  0.200 / 0.390
G32     204.3          13.1                5.4 +/-    1.03      14.2 +/-    1.03  0.170 / 0.500